American Hampshire Sheep Association. (1937). Flock record, Hampshire sheep. American Hampshire Sheep Association.
Chicago-viite (17. p.)American Hampshire Sheep Association. Flock Record, Hampshire Sheep. Detroit, Mich.: American Hampshire Sheep Association, 1937.
MLA-viite (8. p.)American Hampshire Sheep Association. Flock Record, Hampshire Sheep. American Hampshire Sheep Association, 1937.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.